It was shown that the most effective and stereospecific hydride reductant for (R)-4-menthen-3-one to (1R,3R)-menthen-3-ol was i-Bu2AlH whereas the complex BH3·THF, which exhibited the same properties relative to the substrate carbonyl, was a regiospecific but relatively non-stereospecific hydroborating reagent of its double bond.
研究表明,最有效且立体特异性的氢还原剂将 (R)-4-薄荷烯-3-酮还原为 (1R,3R)-薄荷烯-3-醇的是 i-Bu2AlH,而复合物
BH3·THF 虽然对底物羰基表现出相同的性质,但却是一个区域特异性但相对非立体特异性的氢化硼试剂,用于其双键。